The ribosome is needed for translation of mRNA (a) because it has the enzyme that forms peptide bonds between amino acids (b) because the ribosomal RNA contains the codon which determine the sequence of amino acids in a protein (c) because it contains the enzyme that links the amino acids and tRNA (d) because it has enzyme that removes introns from mRNA (e) all of the above

The ribosome is needed for translation of mRNA (a) because it has the enzyme that forms peptide bonds between amino acids (b) because the ribosomal RNA contains the codon which determine the sequence of amino acids in a protein (c) because it contains the enzyme that links the amino acids and tRNA (d) because it has enzyme that removes introns from mRNA (e) all of the above

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Description: The ribosome is needed for translation of mRNA(a) because it has the enzyme that forms peptide bonds between amino acids (b) because the ribosomal RNA contains the codon which determine the sequence of amino acids in a protein (c) because it cont

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter4: Cells

Section: Chapter Questions

Problem 2TYK: Eukaryotic and prokaryotic ribosomes are similar in that: a. both contain a small subunit, but only...

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The ribosome is needed for translation of mRNA (a) because it has the enzyme for adding amino acids to the 5’ end of a tRNA (b) because the ribosomal RNA contains the codon which determines the sequence of amino acids in a protein (c) because it positions tRNA and mRNA so that correct pairing of codon and anti-codon can occur (d) because it has an enzyme that removes introns from mRNA (e) all of the above
Eukaryotic and prokaryotic ribosomes are similar in that: a. both contain a small subunit, but only eukaryotes contain a large subunit. b. both contain the same number of proteins. c. both use mRNA to assemble amino acids into proteins. d. both contain the same number of types of rRNA. e. both produce proteins that can pass through pores into the nucleus.
Which of the following steps in protein synthesis does not require a direct supply of energy? a. proofreading step by certain aminoacyl-tRNA synthetases b. translocation of mRNA in a ribosome c. linkage of an amino acid to its cognate tRNA d. alignment of a tRNA anticodon with an mRNA codon
Which of the following BEST describes the characteristics and function of siRNA? A. a short strand of RNA that can complement and inactivate a sequence of mRNA B. a short strand of RNA that can act as a transcription factor to initiate transcription C. a strand of DNA that can bind to and inactivate an mRNA sequence D. a tRNA that is not able to attach to a ribosome and therefore inhibits the process of translation
The sequence of nucleotides found in mRNA is determined by the a) structure of DNA polymerase, b) sequence of amino acids in a protein, c) large complex proteins, d) sequence of nucleotides in a gene, e) fatty acids and glycerol in the cell.
Which of the following best describes tRNA? a. Provides the instructions for the amino acid sequence of a polypeptide b. Complexes with ribosomal proteins to form ribosomes c. Used for eukaryotic RNA processing d. Transports amino acids to ribosomes during translation
1.1 What is the best description of a Ribosome? a. An enzyme that uses ribose to synthesize amino acids b. A protein/RNA complex that synthesizes protein c. A ribozyme that uses RNA as an enzyme to directly ligate free amino acids to tRNAs d. A multi-subunit protein complex that charges tRNA with amino acids 1.2 In RNA processing? A. Exons are added to the ends of mRNA for protection B. Intron sequences are removed before the mRNA is translated C. The RNA transcript that leaves the nucleus may be much longer than the original primary transcript D. All RNA transcripts will be processed and leave the nucleus.
Which of the following is true for the tRNA of eukaryote cells? tRNA is a) made of DNA and protein, b) the active site in carbohydrate synthesis, c) is a subunit that forms mRNA from the codon of DNA. d) found inside the endoplasmic reticulum, e) has the specific sequence of bases (anti codon) that interacts with the base sequence (codon) of mRNA.
Which of the following statements about the nucleolus is not true? a. The nucleolus is a membrane-bound structure. b. rRNA genes are transcribed in the nucleolus. c. Ribosomal subunits are synthesized in the nucleolus. d. rRNA molecules are chemically modified in the nucleolus.
Four stages in the production of protein molecules in a cell are listed below. 1 - Transfer RNA molecules bring amino acids to the ribosome. 2 - DNA molecules serve as templates for messenger RNA molecules. 3 - Messenger RNA molecules move to ribosomes. 4 - A chain of amino acids forms on the ribosome. Which sequence best represents the correct order of these stages? 2-1-3-4 2-3-1-4 3-2-1-4 4-2-1-3
For each of the following, identify the type of RNA involved (mRNA, rRNA, or tRNA). a. Transports the correct amino acid to the ribosome, using the information encoded in the mRNA. b. Is a major component of ribosomes. c. Speciﬁes the order of amino acids in a protein, using a series of three-base codons, where different amino acids are speciﬁed by particular codons. d. Contains a three-base anticodon that pairs with a complementary codon revealed in the mRNA. e. Assists in making the bonds that link amino acids together to make a protein.
Match the function in translation to each type of RNA (one RNA has two listed functions). 1) Carry an amino acid that is encoded by a codon. 2) Serve as the link between DNA and proteins. 3) Create the backbone of the ribosome 4) Has triplet-nucleotide codons that encode the primary structure of proteins. Here are the choices for the questions: a) tRNA b) rRNA c) mRNA